Fatwa: Muslims Are Permitted To Sign Contracts They Have No Intention of Honoring

From Islam Questions and Answers:

We all know that at present there is no worldwide Islamic court to which the Muslim could refer in the event of disputes with regard to such global contracts. The one who signs this agreement is not abandoning referral for judgement to the laws of Allah, may He be exalted, because those laws are not being applied in most Muslim countries at all, so how about in non-Muslim countries? If it is permissible for the Muslim to refer for judgement to those courts in order to obtain his rights or ward off harm from himself, then it is more appropriate and will make things easier for him to say that it is permissible for him to sign this agreement without intending to approve of that clause and disapproving of it. The believer’s heart should be at ease with faith and he should intend in his heart not to agree with invalid clauses (from an Islamic perspective) in their contracts. We hope, after that, that this matter will be permissible.